2021133112213 has 6 divisors (see below), whose sum is σ = 2077234690146. Its totient is φ = 1966507891632.

The previous prime is 2021133112211. The next prime is 2021133112217. The reversal of 2021133112213 is 3122113311202.

It can be written as a sum of positive squares in 3 ways, for example, as 957722548689 + 1063410563524 = 978633^2 + 1031218^2 .

It is not a de Polignac number, because 2021133112213 - 2¹ = 2021133112211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021133112211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 738177270 + ... + 738180007.

It is an arithmetic number, because the mean of its divisors is an integer number (346205781691).

Almost surely, 2^{2021133112213} is an apocalyptic number.

It is an amenable number.

2021133112213 is a deficient number, since it is larger than the sum of its proper divisors (56101577933).

2021133112213 is an equidigital number, since it uses as much as digits as its factorization.

2021133112213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476357351 (or 1476357314 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2021133112213 its reverse (3122113311202), we get a palindrome (5143246423415).

The spelling of 2021133112213 in words is "two trillion, twenty-one billion, one hundred thirty-three million, one hundred twelve thousand, two hundred thirteen".